torque converter bolts

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Feb 12, 2007 | 08:11 AM

conv90

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Melting Slicks

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From: Milan

torque converter bolts

I want to buy torque converter bolts.
Which bolts I have to buy?
Are these good?
http://store.summitracing.com/partde...t=ARP-200-2906
Thanks
-Beppe-

Feb 12, 2007 | 08:15 AM

Pete K

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Beppe
"Most" of the aftermarket converters use a 7/16 x 20 bolt that is 3/4 inch long. I normally get them from a local hardware store. If you do the same, be sure to use grade 8. They will be gold color.

Feb 12, 2007 | 08:17 AM

Pete K

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I just clicked the link and noticed the link was for flexplate to crankshaft bolts. The 1 pc seal cranks sometimes do not allow the apr bolts to work. I usually use the Mr. Gasket brand because the do fit easily.

Feb 12, 2007 | 08:25 AM

conv90

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Melting Slicks

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From: Milan

Quote:

Originally Posted by Pete K

Pete...quick answer...

I measured the holes in the Edge TQ I have...
I found that They are the same size and thread of the intake manifold bolts...

I seems that my Intake manifold bolts are 8mm 8MA (metric thread)
I can't find on Summit 8mm bolts to use on my torque converter...

A link on flexplate to crank bolt?
..and a link on flexplate to TQ bolts..:o
TIA
-Beppe-

Feb 12, 2007 | 08:32 AM

Pete K

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Beppe,
By coincidence, the length and pitch of the arp link match the sizes I described for a typical aftermarket converter.
This is of no help to you though.

I thought that gm used a 3/8x16 bolt for the intake manifold to head bolts. I will get up, get dressed and run out to the garage to verify that

Feb 12, 2007 | 09:55 AM

Pete K

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Beppe,
I just checked the 3 sets of heads I have laying around. GM does use a 3/8x16 sae bolt to secure the intake to the head. My memory was correct.

Feb 13, 2007 | 09:18 AM

conv90

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Melting Slicks

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From: Milan

Quote:

Originally Posted by Pete K

Beppe,
I just checked the 3 sets of heads I have laying around. GM does use a 3/8x16 sae bolt to secure the intake to the head. My memory was correct.

You are right head bolts are 3/8x16.
The three holes in the converter are tthe same dimension...
(If I screw in a head bolt in the converter holes they are perfect.)
Why (on summit catalog) I can only find 7/16" bolts for converter to flexplate?

Feb 13, 2007 | 10:49 AM

Pete K

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Quote:

Originally Posted by conv90

Aftermarket converter companies use the thred size they choose to. I have never seen them as small as 3/8, normally 7/16x20 is the one they use.
Stock 700's use a fine thread metric bolt.
If you would feel more comfortable with a larger bolt, drill and tap that puppy.
I have normally used grade 8 bolts with no issues. The ARP's are probably overkill, but nice to have.